import 'package:flutter/material.dart';
import 'package:flutter_weekly/stream/StateSubject.dart';
import 'package:flutter_weekly/stream/StreamWidget.dart';
import 'package:flutter_weekly/visible/MyWidgetsBindingObserver.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver{


  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(MyWidgetsBindingObserver());


  }



  void _incrementCounter() {
     Navigator.push(context, MaterialPageRoute(builder: (context){
       return const StreamWidget();
     }));
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '点击跳转',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }

  @override
  void dispose() {
    debugPrint('main===========dispose');
    super.dispose();

  }

  @override
  void deactivate() {
    debugPrint('main===========deactivate');
    super.deactivate();
  }

  @override
  void didChangeDependencies() {
    debugPrint('main===========didChangeDependencies');
    super.didChangeDependencies();
  }
}
